Design of Magnetorquer-Based Attitude Control Subsystem for FORESAIL-1 Satellite

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-12-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
16
220-235
Series
IEEE Journal on Miniaturization for Air and Space Systems, Volume 2, issue 4
Abstract
The magnetorquer-based attitude control system capable of attaining high spin rates and precise pointing control is required for a 3U CubeSat satellite FORESAIL-1. The satellite, developed by the Finnish Centre of Excellence, needs to maintain a spin rate of 24°/s and precise pointing of the spin axis toward the Sun for the particle telescope instrument, as well as to reach 130°/s spin rate for the deployment of the plasma brake. Mission requirements analysis and attitude system requirements derivation are presented, followed by actuator tradeoff and selection, with a detailed design of the complete attitude control system, including the air-cored type of magnetorquer actuators and their drivers, made of H-bridge and filtering components. The design is based on several theoretical and practical considerations with emphasis on the high-power efficiency, such as effects of parallel and serial magnetorquer connections, modeling the magnetorquers with equivalent circuit models for finding a suitable driving frequency and extrapolation methods for efficient dipole moment usage. The in-house manufacturing process of magnetorquers, using a custom 3-D-printer setup, is described. Finally, the testing and verification are performed, by measuring the performance of the manufactured hardware, circuit simulations, and attitude control simulations. It is shown that the manufactured attitude control system fulfills all system requirements. Simulations also confirm the capability to satisfy mission requirements.
Description
Keywords
Attitude control, Angular velocity, Power control, CubeSat
Other note
Citation
Jovanovic , N , Riwanto , B , Niemelä , P , Mughal , M R & Praks , J 2021 , ' Design of Magnetorquer-Based Attitude Control Subsystem for FORESAIL-1 Satellite ' , IEEE Journal on Miniaturization for Air and Space Systems , vol. 2 , no. 4 , 9468712 , pp. 220-235 . https://doi.org/10.1109/JMASS.2021.3093695